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Stuck caliper retaining pin

Discussion in 'XJ Technical Chat' started by dkavanagh, Aug 30, 2025.

  1. dkavanagh

    dkavanagh Well-Known Member

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    I'm stripping the front caliper down to fix a leaky piston. I'll be ordering a rebuild kit that includes the piston from Len, but first, I'm trying to get this pin out, so I can do a proper epoxy coat on this.
    The pin is free in the caliper, but not the caliper mounting bracket. I guess I'll try heat next? Any thoughts? I know it's a steel pin in aluminum, so there's likely galvanic corrosion binding things up.
    56be67b5-23a7-4634-91f2-d3cca05f0999~1.jpg
     
    dkavanagh, Aug 30, 2025
    #1
  2. Franz

    Franz Well-Known Member

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    ACF-50 might work.
     
    Franz, Aug 30, 2025
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  3. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

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    Has the retaining pin been removed? If it has, then penetrating oil, a little heat won't hurt, and a bigger hammer/punch. Replacement pins are available.
     
    chacal, Aug 30, 2025
    #3
    k-moe likes this.
  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    ^^ This ^^
    The most effective penetrating oil also happens to be the least expensive. Mix Automatic Transmission Fluid with Acetone (or Diesel) 1:1 (half of each for the amount you need).
     
    k-moe, Aug 30, 2025
    #4

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